The Nature of the X(2175)
Abstract
We study the puzzling vector meson X(2175) in a multichannel generalisation of the Resonance-Spectrum-Expansion model. Besides the usual P-wave pseudoscalar-pseudoscalar, pseudoscalar-vector, and vector-vector channels that couple to mesons with vector quantum numbers, we also include the important S-wave vector-scalar, pseudoscalar-axialvector and vector-axialvector channels, including the observed (1020)(980) decay mode. The strong coupling to nearby S-wave channels originates dynamically generated poles, two of which come out close to the energy region of the X(2175), viz. at (2.037-i0.170) GeV and (2.382-i0.20) GeV. Further improvements are proposed.
Cite
@article{arxiv.0905.3302,
title = {The Nature of the X(2175)},
author = {S. Coito and G. Rupp and E. van Beveren},
journal= {arXiv preprint arXiv:0905.3302},
year = {2010}
}
Comments
Acta Physica Polonica style, 6 pages, 2 figures (4 plots); plenary talk given by S. Coito at Workshop "Excited QCD", Zakopane, Poland, 8-14 Feb. 2009